CN116961853A - Signal transmitting method, signal receiving method and device - Google Patents
Signal transmitting method, signal receiving method and device Download PDFInfo
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- 238000013507 mapping Methods 0.000 claims description 69
- 230000008447 perception Effects 0.000 claims description 60
- 230000002776 aggregation Effects 0.000 claims description 34
- 238000004220 aggregation Methods 0.000 claims description 34
- 230000008054 signal transmission Effects 0.000 claims description 14
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
Abstract
A signal transmitting method, a signal receiving method and a device, the method comprises: performing OFDM modulation on the transmission data to obtain an OFDM time domain signal; performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks; and modulating the time domain signal blocks to different carrier frequencies for transmission. Compared with the prior art, the signal sending method, the signal receiving method and the signal receiving device provided by the embodiment of the application send the time domain signal blocks of the OFDM signals through a plurality of carrier frequencies, so that the OFDM symbols can be utilized for information transmission, and meanwhile, the time domain signal blocks mapped to different carrier frequencies are utilized for sensing, so that higher communication rate and higher sensing precision can be realized.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a signal sending method, a signal receiving method, and an apparatus.
Background
The communication perception integration is a novel information processing technology for realizing the coordination and fusion of wireless communication and wireless perception functions based on software and hardware resource sharing. The 6G network is developed to full spectrum access, and higher frequency bands such as millimeter waves, terahertz, visible light and the like are gradually introduced on the basis of the traditional frequency band, so that more and more frequency bands overlap with the traditional wireless sensing (radar) in wireless communication; meanwhile, ultra-large-scale antennas, terahertz communication, visible light communication and the like for new generation wireless networks have three-dimensional positioning and imaging capabilities, and the trend and the demand of the prior art promote the fusion design of wireless communication and wireless sensing co-equipment to be possible. Towards 6G, communication perception integration will seek a fusion scheme in multiple dimensions of frequency spectrum, signal energy, hardware, signals, data information, capability, service and the like.
The integrated waveform is a key link for realizing communication perception integration. From the perspective of system resource allocation, the integrated waveform design is mainly divided into two categories:
(1) Integrated design under orthogonal resource allocation
The integrated design under orthogonal resource allocation is further subdivided into: (a) A communication-based integrated waveform, and (b) a perception (radar) -based integrated waveform. The integrated waveform based on communication supports a higher communication rate, but the sensing effect cannot be guaranteed due to limited sensing resources (for example, only part of downlink CSI estimation resources are adopted for sensing). While the integrated waveform based on perception can support higher perception capability, when communication information is embedded, a low-order modulation means (such as BPSK) is adopted, and the communication rate is very low.
(2) Fused integral waveforms
The fused integrated waveforms will occupy the same system resources while achieving both communication and perception functions. In this type of waveform design scheme, the design is required to combine the common requirements of communication and perception. The waveforms output are different according to different design criteria. The main stream scheme comprises a compromise of perceptibility and communication capability under total power constraint, a compromise of estimation performance and communication performance, a requirement of a perceptive capacity index and the like, and the scheme can obtain a better compromise of perceptive capability and communication capability, but has the cost of higher design complexity.
It can be seen that in the integrated design scheme under the orthogonal resource allocation in the prior art, a certain function is generally taken as the main part, and only one aspect of communication or perception function can be met, so that a better compromise of communication and perception performance is difficult to realize. Although the fused integrated waveform can realize the compromise of the optimal performance, the problem is that the design complexity is high. Therefore, a communication perception integration scheme capable of simultaneously guaranteeing a higher communication rate and a higher perception precision is needed.
Disclosure of Invention
At least one embodiment of the application provides a signal sending method, a signal receiving method and a signal receiving device, and a communication perception integrated scheme capable of guaranteeing high communication speed and high perception precision simultaneously is realized.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, an embodiment of the present application provides a signal transmitting method, which is applied to a signal transmitting apparatus, including:
performing OFDM modulation on the transmission data to obtain an OFDM time domain signal;
performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
and modulating the time domain signal blocks to different carrier frequencies for transmission.
Optionally, the partitioning processing is performed on the OFDM time domain signal to obtain a plurality of time domain signal blocks, including:
acquiring a perception starting point, the time domain length of a time domain signal block and the number L of the time domain signal blocks, wherein L is an integer greater than or equal to 2;
and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
Optionally, the time domain length of the time domain signal block is at least one of the following: one radio frame, one subframe, one slot, and one OFDM symbol.
Optionally, the modulating the plurality of time domain signal blocks onto different carrier frequencies for transmission includes:
and modulating the time domain signal blocks to corresponding carrier frequencies for transmission according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequencies.
Optionally, the aggregation level is used for indicating a quantitative proportionality relation between the time domain signal block and the mapped carrier frequency, and the quantitative proportionality relation comprises at least one of the following: one-to-one, one-to-many, many-to-one;
the mapping pattern is used for indicating a mapping relation between a time domain signal block and a carrier frequency, and the mapping relation comprises: the time of the time domain signal block is in linear relation with the frequency of the carrier frequency; the time of the time domain signal block is in a nonlinear relationship with the frequency of the carrier frequency.
Optionally, the method further comprises:
transmitting, to a signal receiving apparatus, perceptual configuration information comprising at least one of: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, there are at least two mapping patterns, wherein different mapping patterns are associated with different perception targets.
In a second aspect, an embodiment of the present application provides a signal receiving method, which is applied to a signal receiving apparatus, including:
receiving a first signal sent by a signal sending device, wherein the first signal comprises time domain signal blocks modulated on different carrier frequencies for sending;
carrying out carrier frequency demodulation on the first signals to obtain a plurality of time domain signal blocks carried on each carrier frequency;
and carrying out OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
Optionally, the demodulating the carrier frequency of the first signal to obtain a plurality of time domain signal blocks carried on each carrier frequency includes:
and carrying out carrier frequency demodulation on the first signal according to a preset aggregation level and a mapping pattern between the time domain signal blocks and carrier frequencies to obtain a plurality of time domain signal blocks carried on each carrier frequency.
Optionally, the performing OFDM demodulation on the plurality of time domain signal blocks to obtain received data includes:
and carrying out OFDM demodulation on the plurality of time domain signal blocks according to the perception starting point of the time domain signal blocks, the time domain length and the number L of the time domain signal blocks to obtain received data.
Optionally, the method further comprises:
receiving sensing configuration information sent by the signal receiving device, wherein the sensing configuration information comprises at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, the method further comprises:
acquiring the transmission data corresponding to the received data at the signal transmission device side;
and performing sensing processing according to the received data and the sent data to obtain sensing information.
In a third aspect, an embodiment of the present application provides a signal transmitting apparatus, including a transceiver and a processor, where,
the processor is used for sending data to perform OFDM modulation to obtain an OFDM time domain signal; performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
the transceiver is configured to modulate the plurality of time domain signal blocks onto different carrier frequencies for transmission.
Optionally, the processor is further configured to obtain a perception starting point, a time domain length of the time domain signal block, and the number L of the time domain signal blocks, where L is an integer greater than or equal to 2; and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
Optionally, the transceiver is further configured to modulate the plurality of time domain signal blocks onto corresponding carrier frequencies according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequencies for transmission.
Optionally, the transceiver is further configured to send, to the signal receiving apparatus, sensing configuration information, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
In a fourth aspect, an embodiment of the present application provides a signal transmitting apparatus, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described in the first aspect.
In a fifth aspect, an embodiment of the present application provides a signal receiving apparatus, including a transceiver and a processor, wherein,
the transceiver is configured to receive a first signal sent by the signal sending device, where the first signal includes a time domain signal block modulated onto different carrier frequencies to send the first signal;
the processor is used for carrying out carrier frequency demodulation on the first signal to obtain a plurality of time domain signal blocks carried on each carrier frequency; and carrying out OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
Optionally, the processor is further configured to demodulate the carrier frequency of the first signal according to a preset aggregation level and a mapping pattern between the time domain signal blocks and carrier frequencies, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
Optionally, the processor is further configured to perform OFDM demodulation on the plurality of time domain signal blocks according to the perceived starting point of the time domain signal block, the time domain length of the time domain signal block, and the number L, to obtain received data.
Optionally, the transceiver is further configured to receive the sensing configuration information sent by the signal receiving device, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, the processor is further configured to obtain transmission data corresponding to the received data on the signal transmitting device side; and performing sensing processing according to the received data and the sent data to obtain sensing information.
In a sixth aspect, an embodiment of the present application provides a signal receiving apparatus, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described in the second aspect.
In a seventh aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a program which, when executed by a processor, implements the steps of the method as described above.
Compared with the prior art, the signal sending method, the signal receiving method and the signal receiving device provided by the embodiment of the application send the time domain signal blocks of the OFDM signals through a plurality of carrier frequencies, so that the OFDM symbols can be utilized for information transmission, and meanwhile, the time domain signal blocks mapped to different carrier frequencies are utilized for sensing, so that higher communication rate and higher sensing precision can be realized.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a flow chart of a signaling method according to an embodiment of the application;
FIG. 2 is a diagram illustrating an exemplary partitioning of time domain signal blocks in accordance with an embodiment of the present application;
FIG. 3 is a block diagram of a conventional OFDM system;
fig. 4 is a schematic diagram of carrier frequency modulation of an OFDM time domain signal in a conventional OFDM system;
fig. 5 is a frame diagram of an OFDM system according to an embodiment of the present application;
fig. 6 is a schematic diagram of one-to-many mapping between time domain signal blocks and carrier frequencies according to an embodiment of the present application;
fig. 7 is a schematic diagram of mapping between a time domain signal block and carrier frequency in many-to-one manner according to an embodiment of the present application;
fig. 8 is a schematic diagram of carrier frequency linear modulation of an OFDM time domain signal block according to an embodiment of the present application;
fig. 9 is a schematic diagram of carrier frequency nonlinear modulation of an OFDM time domain signal block according to an embodiment of the present application;
fig. 10 is a flowchart of a signal receiving method according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a signal transmitting apparatus according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a signal transmission device according to another embodiment of the present application;
fig. 13 is a schematic structural diagram of a signal receiving apparatus according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a signal receiving apparatus according to another embodiment of the present application;
Fig. 15 is a schematic structural diagram of a signal transmission device according to another embodiment of the present application;
fig. 16 is a schematic structural diagram of a signal receiving apparatus according to another embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. "and/or" in the specification and claims means at least one of the connected objects.
The following description provides examples and does not limit the scope, applicability, or configuration as set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiment of the application provides a signal sending method, a signal receiving method and a signal receiving device, which are used for realizing a communication perception integrated scheme for guaranteeing higher communication speed and higher perception precision.
The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.
Referring to fig. 1, a signal transmitting method according to an embodiment of the present application includes:
and step 11, carrying out OFDM modulation on the transmission data to obtain an OFDM time domain signal.
And step 12, performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks.
Here, the above step 12 may be performed in the case where sensing is required according to the requirement of the sensing task, that is, the OFDM time domain signal is subjected to the block processing, so as to obtain a plurality of time domain signal blocks. Specifically, the embodiment of the application can acquire information such as a perception starting point, a time domain length of a time domain signal block, the number L of the time domain signal blocks and the like, and then divide L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal block from the perception starting point. Here, L is an integer greater than or equal to 2. The perceived starting point represents a starting time of a perceived task. The time domain length of the time domain signal block is at least one of the following: one radio frame, one subframe, one slot, and one OFDM symbol. The lengths of the different time domain signal blocks may be the same or different.
In the embodiment of the application, the signal sending device can receive configuration information from the network, wherein the configuration information configures information such as a perception starting point, the time domain length of the time domain signal blocks, the number L of the time domain signal blocks and the like, so that the signal sending device can perform the block division processing according to the perception configuration information.
FIG. 2 provides a schematic illustration of the division of an OFDM signal block (time domain signal block), where T start Representing the perception starting point, T span Representing the time domain length of the time domain signal block. As shown in fig. 2, it is first necessary to determine a perception starting point T start Then, the OFDM time domain signal x (t) to be transmitted is divided into L time domain signal blocks, [ x ] 0 (t),x 1 (t),…,x L-1 (t)]Time domain length T of each time domain signal block span May be one radio frame, and/or one subframe, and/or one slot, and/or one OFDM symbol in length.
And step 13, modulating the time domain signal blocks to different carrier frequencies for transmission.
Unlike the transmission mode of the OFDM signal in the prior art, the embodiments of the present application modulate a plurality of time domain signal blocks to different carrier frequencies for transmission, where the time domain signal blocks are transmitted through different carrier frequencies (e.g., different sub-carriers), and there may be one or more than one time domain signal block on some carrier frequencies.
Through the steps, the embodiment of the application transmits the time domain signal blocks through a plurality of carrier frequencies, so that the sensing processing can be performed at the signal receiving end according to the received data and the transmission data transmitted by the signal transmitting device, and the sensing information is obtained. In the embodiment of the application, the OFDM symbols can be utilized for information transmission, and the OFDM signal blocks mapped to different carrier frequencies are utilized for sensing, so that higher communication rate and higher sensing precision can be realized at the same time.
In the embodiment of the application, the signal transmitting device can modulate the time domain signal blocks to the corresponding carrier frequencies for transmission according to the preset aggregation level and the mapping pattern between the time domain signal blocks and the carrier frequencies.
Specifically, the aggregation level is used for indicating a quantitative proportion relation between the time domain signal block and the mapped carrier frequency, and the quantitative proportion relation comprises at least one of the following components: one-to-one, one-to-many, many-to-one. Wherein, one-to-one indicates that one time domain signal block is mapped to one carrier frequency, that is, the time domain signal block and the carrier frequency are in one-to-one correspondence. The one-to-many representation is that one time domain signal block is mapped to at least two carrier frequencies. The many-to-one representation maps multiple time domain signal blocks to the same carrier frequency. The mapping pattern is used for indicating a mapping relation between a time domain signal block and a carrier frequency, and the mapping relation comprises: the time of the time domain signal block is in linear relation with the frequency of the carrier frequency; the time of the time domain signal block is in a nonlinear relationship with the frequency of the carrier frequency.
In addition, in order to achieve sensing of different sensing targets, for example, sensing of speeds of a plurality of vehicles, the embodiment of the present application may further configure at least two mapping patterns, wherein different mapping patterns associate different sensing targets. In this way, the signal receiving apparatus may implement the perception of a specific perception target using the mapping pattern associated with each perception target.
In the embodiment of the present application, in order to facilitate the sensing processing of the signal receiving apparatus, in the embodiment of the present application, the signal transmitting apparatus may further transmit sensing configuration information to the signal receiving apparatus, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Fig. 3 provides a block diagram of a transceiver system for implementing ranging and speed measurement based on a conventional OFDM system, in which all OFDM time domain signals are modulated to a fixed carrier frequency f during conventional OFDM up-conversion c As shown in fig. 4. At this time, the system may have a higher communication rate, but not a good perceptibility.
The block diagram of the sensing system based on the OFDM system provided in the embodiment of the present application is shown in fig. 5, where one or more time domain signal blocks (i.e., OFDM signal blocks) are modulated to one or more different carrier frequencies.
In the mapping process of the time domain signal block and the carrier frequency, a one-to-one, one-to-many and many-to-one mapping relationship can be adopted, as shown in fig. 6-7. The network may configure different Aggregation Levels (AL) to effect the above-described change in number of mappings. For example, as shown in FIG. 6, at AL <Under the condition of 1, adopting a one-to-many mapping mode, wherein 1 time domain signal block corresponds to 1/AL carrier frequencies, the time domain signal block carries out linear frequency modulation according to the 1/AL carrier frequencies, and the mode has more carrier frequency conversion corresponding to up-conversion and down-conversion, has higher realization complexity and can obtain better precision. As shown in fig. 7, at AL>1, a mapping mode of many to one is adopted, a plurality of time domain signal blocks correspond to one carrier frequency, for example, x 0 (t) and x 1 (t) mapping to the same carrier frequency, the mode up-conversion and down-conversion corresponding carrier frequencies are less complex but with relatively low accuracy; al=1, a one-to-one mapping method is adopted.
The following gives 2 examples in a one-to-one (al=1) mapping manner, as shown in fig. 8 to 9. In this example, although the perceived resource allocation is not performed on the system resources, the modulated OFDM signal carries both the data information of the communication and also has good ranging and speed measuring capabilities.
1) Linear carrier frequency modulation
As shown in fig. 8, for linear carrier frequency modulation, the carrier frequency versus time of the different time domain signal blocks satisfies linearityRelationship. Let the fm frequency be k,f 0 ,f L-1 carrier frequencies (i.e., carrier frequency) of time domain signal block 0 and time domain signal block L-1, respectively, satisfy f L-1 ≥f 0 。f 0 ,f L-1 The size may be configured according to the perceived capability requirements.
The frequency difference exists between the sending signal and the echo signal, and the distance of the perception target can be calculated by utilizing the frequency difference of the time domain signal blockDistance measurement accuracy is +.>Similarly, the speed of the perceived target may be calculated.
2) Nonlinear carrier frequency modulation
As shown in fig. 9, for nonlinear carrier frequency modulation, there is a one-to-one mapping of carrier frequencies of different signal blocks to time (which can be considered as a frequency hopping process across symbols/slots/subframes/radio frames). The network may configure a mapping matrix comprising a number of different mapping patterns that may be associated with different sensing targets to achieve multi-target sensing. The mapping matrix may be preconfigured by the network to the transmitting end and the receiving end (i.e., the signal transmitting apparatus and the signal receiving apparatus).
When the sensing function is started, the sending end and the receiving end adopt the same mapping pattern to carry out signal modulation and demodulation. In this system, it is assumed that the modulation frequency of the system is k,f max ,f min the maximum and minimum carrier frequencies in the time domain signal block respectively satisfy f max ≥f min 。f max ,f min The size may be configured according to the perceived capability requirements.
The frequency difference exists between the sending signal and the echo signal, which is beneficial to Using the frequency difference to calculate the distance between the sensing targetsDistance measurement accuracy is +.>Similarly, the speed of the perceived target may be calculated.
It can be seen that chirping can be considered a special case of the non-chirping described above. The latter makes the system possess better anti-jamming capability through more random frequency modulation.
Referring to fig. 10, an embodiment of the present application further provides a signal receiving method, which is applied to a signal receiving apparatus, including:
step 101, a first signal sent by a signal sending device is received, where the first signal includes a time domain signal block modulated onto different carrier frequencies for sending.
Here, the time domain signal block is divided from the OFDM time domain signal to be transmitted by the time domain length of the time domain signal block from the perceptual starting point by the signal transmitting means.
Step 102, carrier frequency demodulation is performed on the first signal, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
Here, the signal receiving apparatus may demodulate the carrier frequency of the first signal according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequency, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
And 103, performing OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
Here, the signal receiving apparatus performs OFDM demodulation on the plurality of time domain signal blocks according to the perceived start point of the time domain signal block, the time domain length of the time domain signal block, and the number L, to obtain the received data.
Through the steps, the embodiment of the application can recover the received data from the first signal, and can perform the subsequent processing of the sensing task based on the received data and the transmitted data of the signal transmitting device side. For example, the signal receiving device acquires the transmission data corresponding to the received data on the signal transmitting device side, and then performs sensing processing according to the received data and the transmission data to obtain sensing information.
In addition, to assist in the demodulation process, the signal receiving apparatus may further receive the perceptual configuration information transmitted by the signal receiving apparatus, the perceptual configuration information including at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
The foregoing describes various methods of embodiments of the present application. An apparatus for carrying out the above method is further provided below.
Referring to fig. 11, an embodiment of the present application further provides a signal sending apparatus 1100, including:
A first modulation module 1101, configured to perform OFDM modulation on the transmission data to obtain an OFDM time domain signal;
the block processing module 1102 is configured to perform a block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
a first transmitting module 1103, configured to modulate the plurality of time domain signal blocks onto different carrier frequencies for transmitting.
Optionally, the block processing module 1102 is further configured to obtain a perception starting point, a time domain length of a time domain signal block, and the number L of the time domain signal blocks, where L is an integer greater than or equal to 2; and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
Optionally, the time domain length of the time domain signal block is at least one of the following: one radio frame, one subframe, one slot, and one OFDM symbol.
Optionally, the first sending module 1103 is further configured to modulate the plurality of time domain signal blocks onto corresponding carrier frequencies according to a mapping pattern between the preset aggregation level and the carrier frequencies for sending.
Optionally, the aggregation level is used for indicating a quantitative proportionality relation between the time domain signal block and the mapped carrier frequency, and the quantitative proportionality relation comprises at least one of the following: one-to-one, one-to-many, many-to-one;
The mapping pattern is used for indicating a mapping relation between a time domain signal block and a carrier frequency, and the mapping relation comprises: the time of the time domain signal block is in linear relation with the frequency of the carrier frequency; the time of the time domain signal block is in a nonlinear relationship with the frequency of the carrier frequency.
Optionally, the signal transmitting device further includes:
the second sending module is used for sending the perception configuration information to the signal receiving device, wherein the perception configuration information comprises at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, there are at least two mapping patterns, wherein different mapping patterns are associated with different perception targets.
The apparatus in this embodiment corresponds to the method applied to the signal transmission device, and the implementation manner in each embodiment is applicable to the embodiment of the apparatus, so that the same technical effects can be achieved. The device provided by the embodiment of the application can realize all the method steps realized by the embodiment of the method and can achieve the same technical effects, and the parts and the beneficial effects which are the same as those of the embodiment of the method in the embodiment are not described in detail.
Referring to fig. 12, an embodiment of the present application further provides a signal sending apparatus 1200, including: a transceiver 1201 and a processor 1202;
the processor 1202 is configured to transmit data for performing OFDM modulation to obtain an OFDM time domain signal; performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
the transceiver 1201 is configured to modulate the plurality of time domain signal blocks onto different carrier frequencies for transmission.
Optionally, the processor is further configured to obtain a perception starting point, a time domain length of the time domain signal block, and the number L of the time domain signal blocks, where L is an integer greater than or equal to 2; and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
Optionally, the time domain length of the time domain signal block is at least one of the following: one radio frame, one subframe, one slot, and one OFDM symbol.
Optionally, the transceiver is further configured to modulate the plurality of time domain signal blocks onto corresponding carrier frequencies according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequencies for transmission.
Optionally, the aggregation level is used for indicating a quantitative proportionality relation between the time domain signal block and the mapped carrier frequency, and the quantitative proportionality relation comprises at least one of the following: one-to-one, one-to-many, many-to-one;
The mapping pattern is used for indicating a mapping relation between a time domain signal block and a carrier frequency, and the mapping relation comprises: the time of the time domain signal block is in linear relation with the frequency of the carrier frequency; the time of the time domain signal block is in a nonlinear relationship with the frequency of the carrier frequency.
Optionally, the transceiver is further configured to send, to the signal receiving apparatus, sensing configuration information, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, there are at least two mapping patterns, wherein different mapping patterns are associated with different perception targets.
The apparatus in this embodiment corresponds to the method applied to the signal transmission device, and the implementation manner in each of the embodiments described above is applicable to the embodiment of the apparatus, so that the same technical effects can be achieved. The device provided by the embodiment of the application can realize all the method steps realized by the embodiment of the method and can achieve the same technical effects, and the parts and the beneficial effects which are the same as those of the embodiment of the method in the embodiment are not described in detail.
Referring to fig. 13, an embodiment of the present application further provides a signal receiving apparatus 1300, including:
a first receiving module 1301, configured to receive a first signal sent by a signal sending device, where the first signal includes a time domain signal block modulated onto different carrier frequencies to send the first signal;
a first demodulation module 1302, configured to demodulate the carrier frequency of the first signal to obtain a plurality of time domain signal blocks carried on each carrier frequency;
the second demodulation module 1303 is configured to perform OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
Optionally, the first demodulation module 1302 is further configured to perform carrier frequency demodulation on the first signal according to a mapping pattern between a preset aggregation level and a carrier frequency, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
Optionally, the second demodulation module 1303 is further configured to perform OFDM demodulation on the plurality of time domain signal blocks according to the perceived start point of the time domain signal block, the time domain length of the time domain signal block, and the number L, to obtain received data.
Optionally, the signal receiving apparatus further includes:
the second receiving module is configured to receive the sensing configuration information sent by the signal receiving device, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, the signal receiving apparatus further includes:
the sensing processing module is used for acquiring the transmission data corresponding to the received data at the signal transmission device side; and performing sensing processing according to the received data and the sent data to obtain sensing information.
The apparatus in this embodiment corresponds to the method applied to the signal receiving apparatus, and the implementation manner in each embodiment is applicable to the embodiment of the apparatus, so that the same technical effects can be achieved. The device provided by the embodiment of the application can realize all the method steps realized by the embodiment of the method and can achieve the same technical effects, and the parts and the beneficial effects which are the same as those of the embodiment of the method in the embodiment are not described in detail.
Referring to fig. 14, an embodiment of the present application further provides a signal receiving apparatus 1400, including: a transceiver 1401 and a processor 1402;
the transceiver 1401 is configured to receive a first signal sent by a signal sending device, where the first signal includes a time domain signal block modulated onto a different carrier frequency for sending;
the processor 1402 is configured to demodulate the carrier frequency of the first signal to obtain a plurality of time domain signal blocks carried on each carrier frequency; and carrying out OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
Optionally, the processor is further configured to demodulate the carrier frequency of the first signal according to a preset aggregation level and a mapping pattern between the time domain signal blocks and carrier frequencies, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
Optionally, the processor is further configured to perform OFDM demodulation on the plurality of time domain signal blocks according to the perceived starting point of the time domain signal block, the time domain length of the time domain signal block, and the number L, to obtain received data.
Optionally, the transceiver is further configured to receive the sensing configuration information sent by the signal receiving device, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
Optionally, the processor is further configured to obtain transmission data corresponding to the received data on the signal transmitting device side; and performing sensing processing according to the received data and the sent data to obtain sensing information.
The apparatus in this embodiment corresponds to the method applied to the signal receiving apparatus, and the implementation manner in each of the embodiments described above is applicable to the embodiment of the apparatus, so that the same technical effects can be achieved. The device provided by the embodiment of the application can realize all the method steps realized by the embodiment of the method and can achieve the same technical effects, and the parts and the beneficial effects which are the same as those of the embodiment of the method in the embodiment are not described in detail.
Referring to fig. 15, an embodiment of the present application further provides a terminal 1500, which includes a processor 1501, a memory 1502, and a computer program stored in the memory 1502 and capable of being executed on the processor 1501, where the computer program when executed by the processor 1501 implements the respective processes of the signal transmission method embodiment executed by the signal transmission device and achieves the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
Referring to fig. 16, an embodiment of the present application further provides a network device 1600, which includes a processor 1601, a memory 1602, and a computer program stored in the memory 1602 and capable of being executed on the processor 1601, where the computer program implements each process of the signal receiving method embodiment executed by the signal receiving apparatus and achieves the same technical effects when executed by the processor 1601, and is not repeated herein.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the processes of the signal sending method and the signal receiving method embodiments, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (24)
1. A signal transmission method applied to a signal transmission device, comprising:
performing OFDM modulation on the transmission data to obtain an OFDM time domain signal;
performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
and modulating the time domain signal blocks to different carrier frequencies for transmission.
2. The method of claim 1, wherein the partitioning of the OFDM time domain signal into a plurality of time domain signal blocks comprises:
acquiring a perception starting point, the time domain length of a time domain signal block and the number L of the time domain signal blocks, wherein L is an integer greater than or equal to 2;
and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
3. The method of claim 2, wherein the time domain length of the time domain signal block is at least one of: one radio frame, one subframe, one slot, and one OFDM symbol.
4. The method of claim 1, wherein said modulating the plurality of time domain signal blocks onto different carrier frequencies for transmission comprises:
and modulating the time domain signal blocks to corresponding carrier frequencies for transmission according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequencies.
5. The method of claim 4, wherein,
the aggregation level is used for indicating a quantitative proportion relation between the time domain signal blocks and the mapped carrier frequencies, and the quantitative proportion relation comprises at least one of the following components: one-to-one, one-to-many, many-to-one;
the mapping pattern is used for indicating a mapping relation between a time domain signal block and a carrier frequency, and the mapping relation comprises: the time of the time domain signal block is in linear relation with the frequency of the carrier frequency; the time of the time domain signal block is in a nonlinear relationship with the frequency of the carrier frequency.
6. The method as recited in claim 4, further comprising:
transmitting, to a signal receiving apparatus, perceptual configuration information comprising at least one of: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
7. The method of claim 4, wherein,
there are at least two of the mapping patterns, wherein different mapping patterns are associated with different perceived objectives.
8. A signal receiving method applied to a signal receiving apparatus, comprising:
receiving a first signal sent by a signal sending device, wherein the first signal comprises time domain signal blocks modulated on different carrier frequencies for sending;
carrying out carrier frequency demodulation on the first signals to obtain a plurality of time domain signal blocks carried on each carrier frequency;
and carrying out OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
9. The method of claim 8, wherein demodulating the first signal at the carrier frequency to obtain a plurality of time domain signal blocks carried at respective carrier frequencies comprises:
and carrying out carrier frequency demodulation on the first signal according to a preset aggregation level and a mapping pattern between the time domain signal blocks and carrier frequencies to obtain a plurality of time domain signal blocks carried on each carrier frequency.
10. The method of claim 8, wherein said OFDM demodulating the plurality of time domain signal blocks to obtain the received data comprises:
And carrying out OFDM demodulation on the plurality of time domain signal blocks according to the perception starting point of the time domain signal blocks, the time domain length and the number L of the time domain signal blocks to obtain received data.
11. The method as recited in claim 8, further comprising:
receiving sensing configuration information sent by the signal receiving device, wherein the sensing configuration information comprises at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
12. The method as recited in claim 8, further comprising:
acquiring the transmission data corresponding to the received data at the signal transmission device side;
and performing sensing processing according to the received data and the sent data to obtain sensing information.
13. A signal transmitting apparatus comprising a transceiver and a processor, wherein,
the processor is used for sending data to perform OFDM modulation to obtain an OFDM time domain signal; performing block processing on the OFDM time domain signal to obtain a plurality of time domain signal blocks;
the transceiver is configured to modulate the plurality of time domain signal blocks onto different carrier frequencies for transmission.
14. The signal transmission device according to claim 13, wherein,
the processor is further configured to obtain a perception starting point, a time domain length of a time domain signal block, and a number L of the time domain signal blocks, where L is an integer greater than or equal to 2; and starting from the perception starting point, dividing L time domain signal blocks from the OFDM time domain signal according to the time domain length of the time domain signal blocks.
15. The signal transmitting apparatus of claim 13, wherein,
the transceiver is further configured to modulate the plurality of time domain signal blocks onto corresponding carrier frequencies according to a preset aggregation level and a mapping pattern between the time domain signal blocks and the carrier frequencies for transmission.
16. The signal transmitting apparatus of claim 15, wherein,
the transceiver is further configured to send, to a signal receiving apparatus, perceptual configuration information comprising at least one of: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
17. A signal transmission apparatus, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to any one of claims 1 to 7.
18. A signal receiving apparatus, comprising a transceiver and a processor, wherein,
the transceiver is configured to receive a first signal sent by the signal sending device, where the first signal includes a time domain signal block modulated onto different carrier frequencies to send the first signal;
the processor is used for carrying out carrier frequency demodulation on the first signal to obtain a plurality of time domain signal blocks carried on each carrier frequency; and carrying out OFDM demodulation on the plurality of time domain signal blocks to obtain received data.
19. The signal receiving apparatus of claim 18, wherein,
the processor is further configured to perform carrier frequency demodulation on the first signal according to a mapping pattern between a preset aggregation level and a time domain signal block and carrier frequencies, so as to obtain a plurality of time domain signal blocks carried on each carrier frequency.
20. The signal receiving apparatus of claim 18, wherein,
the processor is further configured to perform OFDM demodulation on the plurality of time domain signal blocks according to the perceived start point of the time domain signal block, the time domain length of the time domain signal block, and the number L, to obtain received data.
21. The signal receiving apparatus of claim 18, wherein,
The transceiver is further configured to receive the sensing configuration information sent by the signal receiving device, where the sensing configuration information includes at least one of the following information: a perception starting point, a time domain length of the time domain signal blocks, the number L of the time domain signal blocks, an aggregation level, and a mapping pattern between the time domain signal blocks and carrier frequencies.
22. The signal receiving apparatus of claim 18, wherein,
the processor is further configured to obtain transmission data corresponding to the received data on the signal transmission device side; and performing sensing processing according to the received data and the sent data to obtain sensing information.
23. A signal receiving apparatus, comprising: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method according to any one of claims 8 to 12.
24. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210403942.9A CN116961853A (en) | 2022-04-18 | 2022-04-18 | Signal transmitting method, signal receiving method and device |
| PCT/CN2023/088885 WO2023202558A1 (en) | 2022-04-18 | 2023-04-18 | Signal sending method and apparatus, and signal receiving method and apparatus |
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| CN202210403942.9A CN116961853A (en) | 2022-04-18 | 2022-04-18 | Signal transmitting method, signal receiving method and device |
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| CN104333527B (en) * | 2014-11-26 | 2019-05-21 | 西安烽火电子科技有限责任公司 | A kind of aircraft COFDM modulation-demo-demodulation method |
| CN110401517B (en) * | 2018-04-24 | 2022-04-01 | 中国移动通信集团有限公司 | Multi-carrier hybrid transmission method, sending end and receiving end |
| CN111212010B (en) * | 2018-11-22 | 2022-05-13 | 中国移动通信集团湖南有限公司 | Multi-carrier hybrid transmission method |
| EP3997812A1 (en) * | 2019-07-11 | 2022-05-18 | Signify Holding B.V. | A modulator for generating an asymmetrically clipped optical, aco, orthogonal frequency division multiplexing, ofdm, signal as well as a corresponding demodulator |
| CN111836296B (en) * | 2020-06-29 | 2022-07-29 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Integrated waveform communication measurement system |
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